This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X225-30S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The MBLJ replacement upgrades to a riveted rolling-packed body and CMSG / DMSG / EMSG sensors (the MAL used CS1-M / DS1-M).
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 195 to 225 mm. This model is discontinued — the direct replacement is the MBLJ20X225-30-S.
- BoreØ20 mm
- Stroke225 mm
- Adjust window195–225 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X225-30-S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S
The AirTAC MALJ20X225-30-S is a discontinued double-acting, double-rod mini cylinder with a 20mm bore and 225mm stroke. It provides a usable rear-adjustable stroke window of 195-225mm via a 30mm stopper screw. The direct replacement is the MBLJ20X225-30-S, matching bore, stroke, force, port, and mounting.
This SKU features a magnet (-S) for position sensing. The original MALJ uses CS1-M / DS1-M switches, while the MBLJ replacement upgrades to CMSG / DMSG / EMSG sensors. The MALJ body uses threaded covers, whereas the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. Impact is softened by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X225-30-S |
| Bore size | Ø20 mm |
| Stroke | 225 mm |
| Adjustable window | 195 – 225 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.1 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 300 mm |
The rear adjuster is a travel stop, not a lock — it sets the end position but does not hold the load without live air. No back-cover code and no SDB on adjustable-stroke. The MBLJ20X225-30-S carries the same ratings.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 132 N | 132 N |
| 0.7 MPa | 185 N | — |
| Max (@1.0 MPa) | 27 kgf | |
MALJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod MAL push of the same bore. The MBLJ20X225-30-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×225 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 195–225 mm window. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MBLJ uses CMSG/DMSG/EMSG). |
Replacement: MALJ → MBLJ. No back-cover (CA/U/CM) and no SDB. Mounting: FA / LB.
Where the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S Is Used
Connector Insertion Press
Fine-tune the downward travel window when seating delicate ribbon connectors, relying on the fixed rubber bumper to soften the end-of-stroke impact and prevent board damage.
Dispensing Valve Depth Stop
Adjust the rear screw to vary needle height over a moving tray, ensuring consistent adhesive bead volume without needing live air to maintain the adjusted position.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S with MBLJ20X225-30-S
To replace the MALJ20X225-30-S, specify the MBLJ20X225-30-S to keep the 20mm bore, 225mm stroke, 30mm adjust code, G1/8 port, PT threads, and FA/LB mounting (no back cover or SDB). The -S magnet changes the sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG. The adjuster is a travel stop, not a load lock.
At 225mm stroke, the 8mm rod is susceptible to bending under side loads; ensure strict alignment or add external guides to prevent rod damage.
Upgrade checklist
- ✓ Order the MBLJ20X225-30-S (same bore/stroke/adjust)
- ✓ Same 195–225 mm adjustable window
- ✓ Adjuster is a stop, not a lock
- ✓ No back cover / SDB — plan an FA/LB mount
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.1 – 1.0 MPa operating pressure.
- check The rear adjuster sets the end position — it is not a load lock.
- check No back-cover / SDB on adjustable-stroke — use FA / LB.
- check Front/rear covers are threaded — not for field disassembly.
- check For new builds, specify the MBLJ20X225-30-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-30-S FAQ
Yes, the MALJ20X225-30-S is discontinued. The direct replacement is the MBLJ20X225-30-S, matching the 20mm bore, 225mm stroke, 30mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the magnet sensor compatibility from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The 30mm adjuster creates a usable stroke window of 195-225mm. The rear adjuster acts as a travel stop, not a lock, and cannot hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X225-30-S replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
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